{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3607959","name":"Spaces Corner Mine","status":"Abandoned and Sealed","status_date":"1995-02-16","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"PA","county":"Armstrong","nearest_town":"Kittanning","operator_id":"P19510","operator_name":"Hays Run Coal Company","controller_id":"C13390","controller_name":"Arthur T Walker Estate","district":"C03","office":"Indiana PA Field Office","employees":0,"latitude":40.8,"longitude":-79.5},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":5},"relationships":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-13T11:19:05.459773+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"3607959","name":"Spaces Corner Mine"},"operator":{"type":"operator","id":"P19510","name":"Hays Run Coal Company"},"controller":{"type":"controller","id":"C13390","name":"Arthur T Walker Estate"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12800","name":"Jrc Land & Equipment Company"},"object":{"type":"mine","id":"3607959","name":"Spaces Corner Mine"},"validFrom":"1987-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|C12800|1987-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19510","name":"Hays Run Coal Company"},"object":{"type":"mine","id":"3607959","name":"Spaces Corner Mine"},"validFrom":"1987-10-01","validTo":"1988-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|P19510|1987-10-01|1988-08-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13390","name":"Arthur T Walker Estate"},"object":{"type":"mine","id":"3607959","name":"Spaces Corner Mine"},"validFrom":"1987-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|C13390|1987-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13390","name":"Arthur T Walker Estate"},"object":{"type":"operator","id":"P19510","name":"Hays Run Coal Company"},"validFrom":"1987-10-01","validTo":"1988-08-31","current":false,"derived":true,"evidenceMineId":"3607959","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|P19510|1987-10-01|C13390|1987-10-01|89505"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18363","name":"Nats Creek Mining Company Inc"},"object":{"type":"mine","id":"3607959","name":"Spaces Corner Mine"},"validFrom":"1988-09-01","validTo":"1991-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|P18363|1988-09-01|1991-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12800","name":"Jrc Land & Equipment Company"},"object":{"type":"operator","id":"P18363","name":"Nats Creek Mining Company Inc"},"validFrom":"1988-09-01","validTo":"1991-06-30","current":false,"derived":true,"evidenceMineId":"3607959","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|P18363|1988-09-01|C12800|1987-01-01|87935"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19510","name":"Hays Run Coal Company"},"object":{"type":"mine","id":"3607959","name":"Spaces Corner Mine"},"validFrom":"1991-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|P19510|1991-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13390","name":"Arthur T Walker Estate"},"object":{"type":"operator","id":"P19510","name":"Hays Run Coal Company"},"validFrom":"1991-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3607959","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607959|P19510|1991-07-01|C13390|1987-10-01|89506"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"1995-02-16","lastDate":"1995-02-16","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":3,"firstDate":"1987-10-01","lastDate":"1991-07-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]}],"safety":{"href":"/api/v1/mines/3607959/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3607959/silica","description":"Dedicated silica records, measurements, sample status and trends. Defaults to the snapshot year; use year=all for history."},"externalContext":{"eia":null,"title30":{"snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"},"regulations":[],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"3607959","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}